handle_llvm_runner_image.yml

name: Handle LLVM_runner docker image

on:
  pull_request:
    branches:
      - main
  push:
    branches:
      - main

jobs:
  check_changes:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      pull-requests: read
    outputs:
      image_to_build: ${{ steps.set_output.outputs.image_to_build }}
    steps:
      - uses: actions/checkout@v4

      - id: determine_changes
        uses: tj-actions/changed-files@v39
        with:
          files_yaml: |
            llvm_runner:
              - "images/llvm_runner/Dockerfile"
            llvm_runner_jammy:
              - "images/llvm_runner/jammy.Dockerfile"
            both:
              - ".github/workflows/handle_llvm_runner_image.yml"

      - id: set_output
        run: |
          if [ "${{ steps.determine_changes.outputs.llvm_runner_any_changed }}" == "true" ]; then
            echo "image_to_build=llvm_runner" >> "$GITHUB_OUTPUT"
          elif [ "${{ steps.determine_changes.outputs.llvm_runner_jammy_any_changed }}" == "true" ]; then
            echo "image_to_build=llvm_runner_jammy" >> "$GITHUB_OUTPUT"
          elif [ "${{ steps.determine_changes.outputs.both_any_changed }}" == "true" ]; then
            echo "image_to_build=both" >> "$GITHUB_OUTPUT"
          else
            echo "image_to_build=none" >> "$GITHUB_OUTPUT"
          fi

  handle_image:
    needs: check_changes
    if: needs.check_changes.outputs.image_to_build != 'none'
    runs-on: [matterlabs-ci-runner]
    strategy:
      matrix:
        image_name: [llvm_runner, llvm_runner_jammy]
      fail-fast: false
    steps:
      - uses: actions/checkout@v4

      - name: Set outputs
        if: matrix.image_name == needs.check_changes.outputs.image_to_build || needs.check_changes.outputs.image_to_build == 'both'
        id: set_output
        run: echo "sha_short=$(git rev-parse --short HEAD)" >> "$GITHUB_OUTPUT"

      - name: Set up Docker Buildx
        if: matrix.image_name == 'llvm_runner_jammy'
        uses: docker/setup-buildx-action@v3
        with:
          platforms: linux/amd64,linux/arm64,linux/arm64/v8

      - name: Log in to Docker Hub
        if: (matrix.image_name == needs.check_changes.outputs.image_to_build || needs.check_changes.outputs.image_to_build == 'both') && github.event_name == 'push'
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USER }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Build and optionally push Docker image
        if: matrix.image_name == needs.check_changes.outputs.image_to_build || needs.check_changes.outputs.image_to_build == 'both'
        uses: docker/build-push-action@v5
        with:
          push: ${{ github.event_name == 'push' }}
          tags: |
            matterlabs/${{ matrix.image_name }}:${{ steps.set_output.outputs.sha_short }}
            matterlabs/${{ matrix.image_name }}:latest
          file: images/llvm_runner/${{ matrix.image_name == 'llvm_runner_jammy' && 'jammy.' || '' }}Dockerfile
          platforms: ${{ matrix.image_name == 'llvm_runner_jammy' && 'linux/amd64,linux/arm64,linux/arm64/v8' || 'linux/amd64' }}